Let's look at an example of what I think the Code is talking about. Let's say you have a service cable from the local power company that swings from the pole on the edge of the property to a conduit mast not on the edge of the residence, but more toward the center. The drop is then down to the service entrance panel below. The service conductors that cross the roof top must be at least 8 feet above the roof surface. This is so that when the roof is being replaced, the roofers will not get into the service conductors and get themselves hurt or killed.
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